Consider a two-dimensional square potential energy well with sides of length l. the potential energy is infinite at the sides and zero inside. the single-particle energies are given by (h2/8ml2)(m + n, where nr and ny are integers. report all energy values in units of (h/8ml2) (a) (5 points) what is the energy of the ground state? (b) (5 points) what is the energy of the first excited state? (c) (5 points) what is the degeneracy of the first excited state? (d) (10 points) if we put three electrons into this potential energy well, what would the energy of the ground state be?

An object slows down after being pushed due to the energy within the object being used up in doing work against frictional forces between the object and the floor, and work done again viscosity forces between the air molecule and the surface area of the object in contact with the air molecule.

This is in accordance with Newton's first law of motion which states that an object in Motion or rest will continue in that state unless being acted upon by an external force.

Some of the energy is seen to be transformed into heat and sound by these forces forcing the object to slow down and stop if no longer pushed